8 AM to 4 PM, usually manned by the Captain, Department Heads and other Senior staff.
Beta Shift: 4 PM to 12 AM, usually manned by the XO and departmental Assistants.
Gamma Shift: 12 AM to 8 AM, manned by the 2nd officer and other Junior officers needing practice.
During Red Alert: Brings Alpha shift on immediately regardless of current shift.
During Yellow Alert: Puts Alpha shift on Alert readiness. Captain has the bridge.
During Condition Green: Shifts as above.